I never quit until I get what I want.
Genius is not inspired. Inspiration is perspiration.
When you have exhausted all possibilities, remember this - you haven't.
The best thinking has been done in solitude. The worst has been done in turmoil.
I have been at work for some time building an apparatus to see if it is possible for personalities which have left this earth to communicate with us.
The reason a lot of people do not recognize opportunity is because it usually goes around wearing overalls looking like hard work.